Hi. I am looking for the excitation-emission matrix of a compound called 5,6-dihydroxiindole (DHI). I irradiated tyrosine with UV and want to see if the emission peaks I got match with the ones from that compound. Dihydroxiindole-carboxylic acid I have and some peaks match, but not all.

If anyone knows where to find it or has some knowledge on the products obtained by irradiation of tyrosine (including melanine formation), I would be very grateful.

Thanks!

Ignacio